WO2015129797A1 - 端末装置、集積回路、および、無線通信方法 - Google Patents

端末装置、集積回路、および、無線通信方法 Download PDF

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Publication number
WO2015129797A1
WO2015129797A1 PCT/JP2015/055580 JP2015055580W WO2015129797A1 WO 2015129797 A1 WO2015129797 A1 WO 2015129797A1 JP 2015055580 W JP2015055580 W JP 2015055580W WO 2015129797 A1 WO2015129797 A1 WO 2015129797A1
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WO
WIPO (PCT)
Prior art keywords
pdcch
subframe
repetitions
mbsfn subframe
subframes
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PCT/JP2015/055580
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English (en)
French (fr)
Japanese (ja)
Inventor
翔一 鈴木
立志 相羽
寿之 示沢
智造 野上
一成 横枕
高橋　宏樹
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シャープ株式会社
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Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to US15/119,454 priority Critical patent/US10075952B2/en
Priority to EP15754769.6A priority patent/EP3113561B1/de
Priority to JP2016505288A priority patent/JP6535970B2/ja
Priority to CN201580007733.0A priority patent/CN105981461B/zh
Publication of WO2015129797A1 publication Critical patent/WO2015129797A1/ja

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to a terminal device, an integrated circuit, and a wireless communication method.
  • This application claims priority based on Japanese Patent Application No. 2014-034909 filed in Japan on February 26, 2014, the contents of which are incorporated herein by reference.
  • LTE Long Term Evolution
  • EUTRA Evolved Universal Terrestrial Radio Access
  • 3GPP Third Generation Partnership Project
  • LTE an orthogonal frequency division multiplexing ( ⁇ OFDM) method is used as a downlink communication method.
  • SC-FDMA Single-Carrier Frequency Frequency Division Multiple Multiple Access
  • UE User Equipment
  • LTE is a cellular communication system in which a plurality of areas covered by a base station apparatus are arranged in a cell shape. A single base station apparatus may manage a plurality of cells.
  • Downlink Control Information is transmitted using PDCCH (Physical Downlink Control Channel) or EPDCCH (Enhanced Physical Downlink Control Channel). DCI is used for scheduling of PDSCH (Physical Downlink Shared Shared Channel) in a certain cell.
  • PDCCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • MBSFN subframes reserved for MBSFN (Multicast Broadcast Single Frequency Network) in the downlink are defined.
  • Non-Patent Document 1 In 3GPP, in order to improve cell coverage, a technique for repeatedly transmitting PDCCH and EPDCCH in a plurality of subframes has been studied (Non-Patent Document 1).
  • the integrated circuit of the present invention is an integrated circuit mounted on a terminal device, and has a function of setting the number of repetitions of PDCCH in a plurality of subframes, and information including a parameter indicating the MBSFN subframe. Detecting the PDCCH in a certain subframe except for the MBSFN subframe indicated by the parameter when the function of receiving the PDCCH with downlink assignment and the number of repetitions of the PDCCH are not set If the function for decoding the PDSCH in the same subframe as the certain subframe and the number of repetitions of the PDCCH are set, the plurality of subframes including the MBSFN subframe indicated by the parameter are set. In the frame Ri based on the detection of PDCCH to be returned to exhibit the function of decoding the PDSCH in one or more sub-frames different from the plurality of sub-frames, a series of functions, including the terminal device.
  • the terminal device 1 in which the number of repetitions of PDCCH and EPDCCH is set may determine the DCI format to be monitored based on the transmission mode.
  • BCH, UL-SCH and DL-SCH are transport channels.
  • a channel used in a medium access control (Medium Access Control: MAC) layer is referred to as a transport channel.
  • a transport channel unit used in the MAC layer is also referred to as a transport block (transport block: TB) or a MAC PDU (Protocol Data Unit).
  • HARQ HybridbrAutomatic Repeat reQuest
  • the transport block is a unit of data that the MAC layer delivers to the physical layer. In the physical layer, the transport block is mapped to a code word, and an encoding process is performed for each code word.
  • FIG. 3 is a diagram showing the configuration of the slot according to the present embodiment.
  • the physical signal or physical channel transmitted in each of the slots is represented by a resource grid.
  • the horizontal axis is a time axis
  • the vertical axis is a frequency axis.
  • the resource grid is defined by a plurality of subcarriers and a plurality of OFDM symbols.
  • the number of subcarriers constituting one slot depends on the cell bandwidth.
  • the number of OFDM symbols constituting one slot is seven.
  • Each element in the resource grid is referred to as a resource element.
  • the resource element is identified using a subcarrier number and an OFDM symbol number.
  • the base station apparatus 3 transmits a higher layer signal including information indicating the MBSFN subframe and the non-MBSFN subframe in the serving cell to the terminal apparatus 1.
  • the terminal device 1 sets the parameter mbsfn-SubframeConfigList indicating the MBSFN subframe and the non-MBSFN subframe in the serving cell based on the upper layer signal received from the base station device 3. That is, the base station apparatus 3 sets the parameter mbsfn-SubframeConfigList indicating the MBSFN subframe and the non-MBSFN subframe in the serving cell to the terminal apparatus 1 via the higher layer signal.
  • the terminal device 1 determines whether downlink assignment may occur in the MBSFN subframe indicated by the parameter mbsfn-SubframeConfigList based on whether the number of repetitions of PDCCH and EPDCCH is set. Also good.
  • FIG. 6 is a diagram showing a channel arrangement when the number of repetitions of PDCCH is set.
  • subframes 1, 2, 3, and 6 are MBSFN subframes.
  • PDCCH-R is a PDCCH with the same downlink assignment.
  • PDCCH-R that is repeatedly transmitted corresponds to PDSCH-R.
  • PDCCH and EPDCCH may be scrambled by a pseudo-random sequence.
  • the pseudo-random sequence may be generated based on RNTI (eg, C-RNTI), subframe number, current number of repetitions, and / or total number of repetitions.
  • FIG. 7 is a schematic block diagram showing the configuration of the mobile station apparatus 1 of the present embodiment.
  • the mobile station apparatus 1 includes an upper layer processing unit 101, a control unit 103, a receiving unit 105, a transmitting unit 107, and a transmission / reception antenna 109.
  • the upper layer processing unit 101 includes a radio resource control unit 1011, a setting unit 1013, and a scheduling information interpretation unit 1015.
  • the reception unit 105 includes a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, a radio reception unit 1057, and a channel measurement unit 1059.
  • the transmission unit 107 includes an encoding unit 1071, a modulation unit 1073, a multiplexing unit 1075, a radio transmission unit 1077, and an uplink reference signal generation unit 1079.
  • the radio resource control unit 1011 included in the upper layer processing unit 101 manages various setting information of the own device. Also, the radio resource control unit 1011 generates information arranged in each uplink channel and outputs the information to the transmission unit 107.
  • the setting unit 1013 included in the upper layer processing unit 101 sets a parameter mbsfn-SubframeConfigList.
  • the setting unit 1013 sets a transmission mode related to PDSCH transmission.
  • the scheduling information interpretation unit 1015 included in the upper layer processing unit 101 interprets the DCI format (scheduling information) received via the reception unit 105, and based on the interpretation result of the DCI format, the reception unit 105 and the transmission unit 107. Control information is generated to output the control information to the control unit 103.
  • the receiving unit 105 separates, demodulates, and decodes the received signal received from the base station apparatus 3 via the transmission / reception antenna 109 according to the control signal input from the control unit 103, and sends the decoded information to the upper layer processing unit 101 Output.
  • the demultiplexing unit 1055 separates the extracted signals into PHICH, PDCCH, EPDCCH, PDSCH, and downlink reference signals. Further, demultiplexing section 1055 compensates the propagation path of PHICH, PDCCH, EPDCCH, and PDSCH from the estimated propagation path value input from channel measurement section 1059. Also, the demultiplexing unit 1055 outputs the demultiplexed downlink reference signal to the channel measurement unit 1059.
  • the demodulating unit 1053 multiplies the PHICH by a corresponding code and synthesizes the signal, demodulates the synthesized signal using a BPSK (Binary Phase Shift Shift Keying) modulation method, and outputs the demodulated signal to the decoding unit 1051.
  • Decoding section 1051 decodes the PHICH addressed to the own apparatus, and outputs the decoded HARQ indicator to higher layer processing section 101.
  • Demodulation section 1053 performs QPSK modulation demodulation on PDCCH and / or EPDCCH, and outputs the result to decoding section 1051.
  • the channel measurement unit 1059 measures the downlink path loss and channel state from the downlink reference signal input from the demultiplexing unit 1055, and outputs the measured path loss and channel state to the upper layer processing unit 101. Also, channel measurement section 1059 calculates an estimated value of the downlink propagation path from the downlink reference signal, and outputs it to demultiplexing section 1055.
  • the transmission unit 107 generates an uplink reference signal according to the control signal input from the control unit 103, encodes and modulates the uplink data (transport block) input from the higher layer processing unit 101, PUCCH, The PUSCH and the generated uplink reference signal are multiplexed and transmitted to the base station apparatus 3 via the transmission / reception antenna 109.
  • the encoding unit 1071 performs encoding such as convolutional encoding and block encoding on the uplink control information input from the higher layer processing unit 101.
  • the encoding unit 1071 performs turbo encoding based on information used for PUSCH scheduling.
  • the uplink reference signal generation unit 1079 is a physical cell identifier for identifying the base station device 3 (referred to as physical cell ⁇ ⁇ identity: ⁇ ⁇ ⁇ PCI, Cell ⁇ ID, etc.), a bandwidth for arranging the uplink reference signal, and an uplink grant.
  • a sequence determined by a predetermined rule (formula) is generated based on the notified cyclic shift, the value of a parameter for generating the DMRS sequence, and the like.
  • the multiplexing unit 1075 rearranges the PUSCH modulation symbols in parallel according to the control signal input from the control unit 103, and then performs a discrete Fourier transform (Discrete-Fourier-Transform: DFT).
  • multiplexing section 1075 multiplexes the PUCCH and PUSCH signals and the generated uplink reference signal for each transmission antenna port. That is, multiplexing section 1075 arranges the PUCCH and PUSCH signals and the generated uplink reference signal in the resource element for each transmission antenna port.
  • Radio transmission section 1077 performs inverse fast Fourier transform (inverse Fast Transform: IFFT) on the multiplexed signal, performs SC-FDMA modulation, and adds a guard interval to the SC-FDMA-modulated SC-FDMA symbol
  • IFFT inverse Fast Transform
  • a baseband digital signal converting the baseband digital signal to an analog signal, generating an in-phase component and a quadrature component of an intermediate frequency from the analog signal, removing an extra frequency component for the intermediate frequency band,
  • the intermediate frequency signal is converted to a high frequency signal (up-conversion: up convert), an extra frequency component is removed, the power is amplified, and output to the transmission / reception antenna 109 for transmission.
  • FIG. 8 is a schematic block diagram showing the configuration of the base station apparatus 3 of the present embodiment.
  • the base station apparatus 3 includes an upper layer processing unit 301, a control unit 303, a reception unit 305, a transmission unit 307, and a transmission / reception antenna 309.
  • the higher layer processing unit 301 includes a radio resource control unit 3011, a setting unit 3013, and a scheduling unit 3015.
  • the reception unit 305 includes a decoding unit 3051, a demodulation unit 3053, a demultiplexing unit 3055, a wireless reception unit 3057, and a channel measurement unit 3059.
  • the transmission unit 307 includes an encoding unit 3071, a modulation unit 3073, a multiplexing unit 3075, a radio transmission unit 3077, and a downlink reference signal generation unit 3079.
  • the radio resource control unit 3011 included in the higher layer processing unit 301 generates downlink data (transport block), system information, RRC message, MAC CE (Control Element), etc. arranged in the downlink PDSCH, or higher level. Obtained from the node and output to the transmission unit 307. Further, the radio resource control unit 3011 manages various setting information of each mobile station apparatus 1.
  • the setting unit 3013 included in the upper layer processing unit 301 sets the parameter mbsfn-SubframeConfigList for each mobile station device 1 via the upper layer signal.
  • the setting unit 3013 sets a transmission mode related to PDSCH transmission for each mobile station apparatus 1 via a higher layer signal.
  • the scheduling unit 3015 generates information used for scheduling of physical channels (PDSCH and PUSCH) based on the scheduling result.
  • the scheduling unit 3015 further includes a first uplink reference UL-DL setting, a first downlink reference UL-DL setting, a second uplink reference UL-DL setting, and a second downlink reference UL-DL setting. And / or the timing for performing the transmission process and the reception process is determined based on the transmission direction UL-DL setting.
  • the control unit 303 generates a control signal for controlling the reception unit 305 and the transmission unit 307 based on the control information from the higher layer processing unit 301.
  • the control unit 303 outputs the generated control signal to the reception unit 305 and the transmission unit 307 and controls the reception unit 305 and the transmission unit 307.
  • the demultiplexing unit 1055 demultiplexes the signal input from the radio receiving unit 3057 into signals such as PUCCH, PUSCH, and uplink reference signal. This separation is performed based on radio resource allocation information included in the uplink grant that is determined in advance by the radio resource control unit 3011 by the base station device 3 and notified to each mobile station device 1.
  • demultiplexing section 3055 compensates for the propagation paths of PUCCH and PUSCH from the propagation path estimation value input from channel measurement section 3059. Further, the demultiplexing unit 3055 outputs the separated uplink reference signal to the channel measurement unit 3059.
  • the encoding unit 3071 is a predetermined encoding method such as block encoding, convolutional encoding, turbo encoding, and the like for the HARQ indicator, downlink control information, and downlink data input from the higher layer processing unit 301 Or is encoded using the encoding method determined by the radio resource control unit 3011.
  • the modulation unit 3073 modulates the coded bits input from the coding unit 3071 with a modulation scheme determined in advance by the radio resource control unit 3011 such as BPSK, QPSK, 16QAM, and 64QAM.
  • the downlink reference signal generation unit 3079 uses, as a downlink reference signal, a sequence known by the mobile station apparatus 1 that is obtained by a predetermined rule based on a physical cell identifier (PCI) for identifying the base station apparatus 3 or the like. Generate.
  • the multiplexing unit 3075 multiplexes the modulated modulation symbol of each channel and the generated downlink reference signal. That is, multiplexing section 3075 arranges the modulated modulation symbol of each channel and the generated downlink reference signal in the resource element.
  • the wireless transmission unit 3077 performs inverse fast Fourier transform (Inverse Fast Fourier Transform: IFFT) on the multiplexed modulation symbols and the like, performs modulation in the OFDM scheme, adds a guard interval to the OFDM symbol that has been OFDM-modulated, and baseband
  • IFFT inverse Fast Fourier Transform
  • the baseband digital signal is converted to an analog signal, the in-phase and quadrature components of the intermediate frequency are generated from the analog signal, the extra frequency components for the intermediate frequency band are removed, and the intermediate-frequency signal is generated. Is converted to a high-frequency signal (up-conversion: up convert), an extra frequency component is removed, power is amplified, and output to the transmission / reception antenna 309 for transmission.
  • the receiving unit 105 except for the MBSFN subframe indicated by the parameter mbsfn-SubframeConfigList, based on the detection of the PDCCH in a certain subframe, The PDSCH in the same subframe as the certain subframe may be decoded.
  • the reception unit 105 described above is based on detection of PDCCH repeated in the plurality of subframes including the MBSFN subframe indicated by the parameter mbsfn-SubframeConfigList.
  • the PDSCH may be decoded in one or a plurality of subframes different from the plurality of subframes.
  • the receiving unit 105 described above receives the MBSFN subframe indicated by the parameter mbsfn-SubframeConfigList.
  • the PDCCH does not have to be decoded at the same time, and the PDSCH does not have to be decoded based on the detection of the PDCCH in the MBSFN subframe indicated by the parameter.
  • the number of repetitions of the PDCCH is not set, the transmission mode 9 or 10 is set, and the length of the cyclic prefix in the first subframe in the radio frame is In the case of a normal cyclic prefix, excluding the subframe instructed to decode PMCH and the subframe set as part of the PRS opportunity set only in the MBSFN subframe, Based on the detection of the PDCCH in the MBSFN subframe indicated by the parameter mbsfn-SubframeConfigList, the PDSCH in the same subframe as the MBSFN subframe in which the PDCCH is detected may be decoded.
  • the number of repetitions of the PDCCH is not set, the transmission mode 9 or 10 is set, and the length of the cyclic prefix in the first subframe in the radio frame is In the case of a normal cyclic prefix, the PDCCH in the subframe instructed to decode PMCH and the subframe set as a part of the PRS opportunity set only in the MBSFN subframe Detection of the PDCCH in a subframe instructed to decode PMCH or in a subframe set as a part of a PRS opportunity set only in the MBSFN subframe Based on the PDCC PDSCH in the same subframe as the MBSFN subframe in which H is detected may not be decoded.
  • the mobile station device 1 and a part of the base station device 3 in the above-described embodiment may be realized by a computer.
  • the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed.
  • the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line,
  • a volatile memory inside a computer system serving as a server or a client may be included and a program that holds a program for a certain period of time.
  • the program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.
  • the base station device 3 in the above-described embodiment can be realized as an aggregate (device group) composed of a plurality of devices.
  • Each of the devices constituting the device group may include a part or all of each function or each functional block of the base station device 3 according to the above-described embodiment.
  • the device group only needs to have one function or each function block of the base station device 3.
  • the mobile station apparatus 1 according to the above-described embodiment can also communicate with the base station apparatus as an aggregate.
  • the base station apparatus 3 in the above-described embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network).
  • the base station device 3 in the above-described embodiment may have a part or all of the functions of the upper node for the eNodeB.
  • the mobile station device is described as an example of the terminal device or the communication device.
  • the present invention is not limited to this, and is a stationary type or a non-movable type installed indoors and outdoors.
  • the present invention can also be applied to terminal devices or communication devices such as AV devices, kitchen devices, cleaning / washing devices, air conditioning devices, office devices, vending machines, and other daily life devices.
  • the present invention can be applied to mobile phones, smartphones, computers, and the like.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/JP2015/055580 2014-02-26 2015-02-26 端末装置、集積回路、および、無線通信方法 WO2015129797A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US15/119,454 US10075952B2 (en) 2014-02-26 2015-02-26 Terminal device, integrated circuit, and radio communication method
EP15754769.6A EP3113561B1 (de) 2014-02-26 2015-02-26 Endgerätevorrichtung, integrierter schaltkreis und drahtloskommunikationsverfahren
JP2016505288A JP6535970B2 (ja) 2014-02-26 2015-02-26 基地局装置、端末装置、および、無線通信方法
CN201580007733.0A CN105981461B (zh) 2014-02-26 2015-02-26 基站装置、终端装置以及通信方法

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JP2014-034909 2014-02-26
JP2014034909 2014-02-26

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EP3113561A1 (de) 2017-01-04
CN105981461B (zh) 2019-11-19
EP3113561A4 (de) 2017-10-11
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JP6535970B2 (ja) 2019-07-03

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